Q.1
What are the alternative names of the energy of movement, thermal energy and radiant energy which are all types of energy that are transferred from electrical energy by domestic appliances?
  • Heat, light, sound
  • Kinetic, heat, sound
  • Kinetic, heat, light
  • Light, magnetic, heat
Q.2
A wind-up radio was invented to help people living in communities where it is not always possible to buy batteries. Which of the following represent the main energy changes in such a device?
  • Chemical and internal to electrical
  • Gravitational potential to electrical and heat
  • Elastic potential to kinetic, electrical and sound
  • Gravitational potential to chemical, electrical and sound
Q.3
Digital mp3 players have almost completely replaced portable CD players. When you compare the energy transfers, which of the following types of energy is found in one but not the other?
  • Electrical
  • Heat
  • Sound
  • Kinetic
Q.4
What are the two most common forms of waste energy?
  • Heat and light
  • Heat and sound
  • Light and sound
  • Light and kinetic
Q.5
An air source heat pump is an electrically powered device that recovers heat energy from the air. For every kilowatt of electrical energy used, it provides three kilowatts of heat energy. Some homes are heated using a heat pump. Which of the following is an advantage of using such an appliance when compared with the alternative of using a fossil fuel powered boiler?
  • Saves money
  • Saves time
  • Reduces pollution
  • It is very efficient
Q.6
In developing countries, many homes do not yet have a source of mains electricity and need to rely on batteries. Batteries store which type of energy?
  • Chemical
  • Electrical
  • Potential
  • Light
Q.7
Which of the following represents the energy transfers in a food mixer?
  • Electrical to heat
  • Electrical to light and sound
  • Electrical to kinetic
  • Electrical to kinetic, sound and heat
Q.8
Energy can be transferred usefully, stored or dissipated, but cannot be created or destroyed. In the context of the above sentence, dissipated means what?
  • Energy is lost into the surroundings
  • Energy is lost into the ground
  • Energy is lost into the air
  • Energy is recycled
Q.9
What is the energy transfer that an electric guitar is designed to make?
  • Kinetic to sound
  • Kinetic to elastic potential
  • Kinetic to electrical
  • Electrical to sound
Q.10
When energy has been dissipated, it:
  • can be recycled
  • can be recovered using a device called a heat pump
  • becomes spread out and less useful
  • is destroyed
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